NOTES: Imputation rate at total level is lower than imputation rates at detail levels because some institutions could not provide totals but not details. Because of rounding, detail may not add to total. Percentages calculated on unrounded numbers. This table includes only institutions reporting $1 million or more in total R&D expenditures in FY 2012. Institutions reporting less than $1 million in total R&D expenditures in FY 2012 completed a shorter version of the survey form in FY 2013, and that form did not include this question.

SOURCE: National Science Foundation, National Center for Science and Engineering Statistics, Higher Education Research and Development Survey, FY 2013.